I'm having a heck of a time getting this one (it's the last one I need). I can't seem to get the pump to move fast enough. Do you face your TV when you do this? Any suggestions to get this one? Thanks.

Pump You Up:
When you get to a pump, lock your elbows slightly out from your sides. Swing your hands from shoulder height down quickly. Adjust the speed of your swings and timing with the avatar and the achievement will unlock. This one reminds me of some old Mario Party minigames.